Universal joint.



U. L. CUMMINGS.

UNIVERSAL JOINT. APPLIGATION FILED APR. 14, 1909.

9555994, Patented Feb. 22, 1910.

- Witnesses:

entrain snares Parana ornio CHARLES L. CUMMINGS, 6F NEW YOELZ, N. Y

UNIVERSAL JOINT.

Specification of Letters Patent. Application filed April 1 1909. serial No. 489,767

Patented Feb. 22,

To all whom it may concem Beit known that 1, CHARLES L. CUM- irinos, a citizen of the United States, residfor engaging the connecting block and re-,

sisting the tendency of such arms when un der load to spread apart, and it also .embodies conical faces carried by the arms for inter-engagement, these faces being held-in driving engagement by the connecting block:

Certain novel features pertaining to the general construction and organization of the ointwlnch make for its general efiiciency and commercial adaptability, will be more fully described in the proper portion of the description and referred to in the claims.

In the drawings accompanying and forming a part of this specification Figure 1 is an elevational view, partly shown in longitudinal section, of a practical embodiment of a form of my invention. Fig. 2 is a view at about right angles to that shown in Fig. .1, more of the parts being shown in longitudinal section. Fig. 3 is a side view of one side or portion of the joint'disconnected from the connecting block. Fig. 4 is an end View of the portion illustrated'in Fig 3.. looking at this from the left hand; end. Fig. 5 is an illustration of one ofthe armsshown discon-v nected from. th'elholding devices therefor. Fig. 6 is a side view of arms integrally connected, the arms, shank, pins and headbaing in one piece. Fig. 7 is an illustration of the four conical driving members broken away from their carrying arms, and one member, or half, of the connecting block; in this view the connecting pin or rivet, is

' shown in cross section. Fig. 8 is a cross sectional view through the entire block made up of both members, and is taken at about the plane of the line 8-8 of Fig, 7. Fig. 9 illustrates the manner inwhich the arms maybe securely held in position in the connecting member, and Figs. 10 and 11 are sections'of Fig. 9 at about the planes indicated by the lines 10-10 and 11-11 rcspectively thereon.

One of the difficulties experienced in the practical use of universal joints-is that the arms 10, which, device may be regarded as bifurcations of the shafts which are to be connected, have a tendency when the shaftis under load to spread apart. The means which have been resorted to for holding these arms together have been screws and rivets and. various devices niade separately from and thenattached to the arms. The objection to this manner of construction is that these parts have to be so small in commercial forms of the device that-they are weak, making the holes to carry these parts weaken other parts, and generally the construction is such that after a short amount of hard usage they become loose and finally destroy the construction.- In my device each of the arms 10 will be provided with a pin 11, which pin will bear a head 12. the pins project toward each other and the heads are carried upon the in ward ends of the pins and present conical in certain aspects of the faces 13 and a square shoulder 14 at the rear or outer end.

The faces 13 constitute the driving faces, that is, the faces of the pins upon one shaft are in rolling driving interengagement with the faces of the pins upon the other shaft,

and such faces are held in driving engagement by means of a connecting block shown as comprising two members 15-45, which are held together by some suitable connecting device, as for instance a rivet 16.

In Fig. 7 the broken away pins and the heads are illustrated in position in one o the connecting block members. Each block member will be chambered out. The chamher is shown at 17 in Fig- 8. From'this chamber will extend outwardly through the walls 18 which surround such chamber, semi-cylindrical recesses or hearing portions 19 which will receive the pins 11, and hold the faces 18 in driving engagement, all the heads 12 being seated in The rear or outward faces 14 of the pins will engage the faces '20 of the wallsof the the said chamber.

the coupling or joint is under load.

As before stated, the heads, pins and arms,

are shown as made integral, In Fig. 5 and some of. the other figures, each arm is shown faces.

asmade in a single structure, and which arms are provided with a boss or shoulder portion 21, and shank or tang POI'tlOIlS,

22, 26 for seating in a sleeve or holder 23. In Fig. 6 the arms and shanks are shown as made. in one integral structure. The holder is shown as socketed at its end at 24 for re ceiving the end of the shaft 25., which is to be coupled to another and similar shaft, or whatever devices it may be des red in practice to connect up. In the present instance one of the arm shanks as 26 is shown as made longer, than is the other, arm 22, and

this is for the purpose of engaging a simr.

larly formed end 27 of the shaft. The arms are shown as connected together and to the Coupling by means of apin 2S, and the-shaft is shown as connected. with thesoclret of the sleeve or connector 23 by means of a pin 29. In practice these will be such as are found most convenient for use in the connection in which employed; they may be whatever the trade may demand.

In Figs. .9 and'lO an additional means of securement is illustrated, which will remove considerable of the strain, if not the entire strain, fromthe pins 28 and 29. In this instance the shoulder portion 21 is made longer than in the other illustration, and this is slabbed off at suchside, as at 30,"and mating ends 31 are provided on the sleeves or connector 23 for engaging the slabbed off This furnishes a very strong and satisfactory connection.

It will be seen, particularly by reference to' Fig. 7 that when one shaft has power applied to it and load is applied to the other shaft that the faces 13 which are in, driving engagement will cause one shaft to rotate the other the connecting block will hold isuch faces in engagement and will,'when the lofldbecomes excessive, restram the tendency of the arms 10 to spread apart.

By reference to Fig. 8 and to the division line33 in; Fig. 1 it will he seen that the parts 1515,'Which make a. connecting block, connect on a plane transverse to the general ax s of the shafts 25 when these are in axial ahnement, and bythis means all the pins 11 a e in hearings in each of the members of slicconnecting bloclr, so

. that there are two integral members conmeeting these pins together.

This universal joint is one which it is practicable toflmalre commercially, and the Pat .-m r e' a i1y embled- 4 Having thus described my invention, if

claim:

emcee vided at its end with a conical bearing face,

and means for engaging the pins and holding the said conical bearing faces in rolling driving engagement. v

2. The combination with two pairs of arms, an inwardly projecting pin integrally carried by each arm, said pins being provided with enlarged conical-end faces, the

conical faces of the pins on one pair of arms being in rolling driving engagement with the conical faces on the pins on the other pair of arms, and means for holding the said faces in interengagement.

3. The combination-with .two pairs of arms, an inwardlyprojecting pin carried by each arm, said pins being. provided with conical faces, the conical faces of'the pins on one pair of arms being in rolling driving engagen'ient with the c'onical faces on the pins on the other pair of arms. and means for engaging the pins and holding the said faces in rolling driving engagement.

4. In a universal joint, the combination of two members each providedwith a pair of inwardly directed pins, the pinsof one member being constructed and located for rolling driving engagement with the pins of the other membenand means for holdin said pins in driving engagement.

In .a universal joint, the combination of two members each provided with a pair of inwardly directed pins integral therewith, the pins of one member being'coih structed and located for rolling driving en gagement with the pins of the other mom'- her, and means for holding said pins in driving engagement.

6.'In a' universal joint, the combination with a coupling member made of a pair of members, and means for holding adjacent faces of these members together, the meetingface of each member being chambered and the walls thereof having four half cylindrical recesses or bearings extending outwardly from such chamber, the half recesses in the mating blocks uniting to form bearings, a pair of members each carrying two inwardly directed pinsfor seating in said recesses or bearings and enlarged heads on the pins for occupying said chamber.

lll

7. In a universal joint, the combination I with a pair of members each provided with a pair of arms, each arm having lntegral with itan inwardly. projecting pm and. in-

' tegral with the pin a head having an inwardlv directed conical face and back of such face and outwardly thereof a shoulder disposed generally transversely of the pin nd a co necting b ck f r s idv pins and heads made no of two members, and means for holding adjacent faces of these members eaaoee together, one face 01f each member being chambered out for the partial reception ot all the heads and also provided with a series of half bearings for the pins for holding the heads in driving engagement and for resisting the outward movement of the arms when the members are under load.

= 8. In a universal joint, the combination."

with a pair of members each provided with a pair of arms, each arm having integral with it an inwardly promoting pin and mtegral with the pin a head having a shoulder disposed generally transversely of the a series holding the heads in driving engagement and for engaging the shoulder and resist ing the outward movement of the arms when the members are under load.

9. In a universal joint, the combination 25 with a pair of members each provided with a pair of arms, each arm having integral with it an inwardly projecting pm and integral with the pin a head having a shoulder disposed generally transversely of the 30 pin, and means for engaging the shoulder and resisting the outward movement of the arms when the members are under load.

CHARLES L. CUMMINGS. W'itnesses I I HARRY A. REYBERT,

CHAS. LYON RUSSELL.

of hall bearings vfor the pins for 29 

